NAPA Junction Substation - 115 kV Electrical Infrastructure in the United States

NAPA Junction is a substation located in the United States, operated by NorthWestern Energy. The facility operates at a voltage level of 115 kV, placing it within the sub-transmission or distribution voltage range typical for regional power distribution networks. As a 115 kV substation, NAPA Junction falls under the regulatory oversight of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC). These bodies enforce reliability standards and ensure the secure operation of the bulk power system. The substation likely includes switchgear and transformers to step down voltage for local distribution. The substation's operational status is active, contributing to the electrical infrastructure serving the surrounding area. Its location in the United States means it adheres to NERC's Critical Infrastructure Protection (CIP) standards for cybersecurity and physical security. The facility supports grid reliability and power delivery to end-users.

The substation is located in a rural area of the United States, where electrical infrastructure typically supports agricultural and residential loads. The 115 kV voltage level indicates it is part of the sub-transmission network, which has lower environmental impact compared to high-voltage transmission lines. Substations generally have a small footprint and are designed to minimize electromagnetic field exposure.